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Let f(x)=ln(2+x)-(2x+2)/(x). Statement...

Let `f(x)=ln(2+x)-(2x+2)/(x)`.
Statement I The function f(x) =0 has a unique solution in the domain of f(x).
Statement II f(x) is continuous in [a, b] and is strictly monotonic in (a, b), then f has a unique root in (a, b).

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